It is hemodialysis
Patient arrives and gets to sit on his chair after he is weighed.
His access is established using needles making 2 I.V. Lines or via his line. Then the machine is set and the blood flows through one I.V. Line into the filter in the machine and returns, purified, via the other I.V. Line to the patient. The blood keeps flowing in this manner continuously for 3-4 hrs then needles are disconnected.